diffuser

1. comparativecomparative form of diffuse: more diffuse

plural diffusers

1. Any person or thing that diffuses.
2. A device designed to diffuse a scent efficiently.

   They are in the under-$20 section, which includes a display of scented candles and diffusers.

   2009 February 28, Rita Zekas, “DecoRita visits West Elm”, in Toronto Star

   Synonyms: aroma lamp

3. engineeringAny device that or spreads out or scatters light, making the light appear softer.

   Along the sofa every three and a half feet, fluorescent tubes glow through translucent plastic diffusers.

   2008 January 24, “In a Town Known for Light, a House With Very Little”, in New York Times

4. automotiveA shaped section of a car's underbody which improves the car's aerodynamic properties.
5. natural sciencesA mechanical device that is designed to control the characteristics of a fluid at the entrance to a thermodynamic open system.
6. engineeringAn aerating device consisting of a membrane with fine pores, through which air is blown to generate small bubbles.
7. cookingA cooking item that can be placed above a stove heating element or burner to separate the cooking utensil from the heat source.
8. A hairdryer attachment that diffuses the flow of air.